Montell North America Inc.

Montedison S.p.a.

Leonardo Spagnoli

Luciano Clementini

Giancarlo Braca

Kumar Ogale

Giuseppe Lesca

Michael E Starsinic

Adam F Galambos

Millo Branchesi

Guido Bertelli

Leonardo Pinoca

Renato Africano

Process for spinning thermoweldable fibers obtained from polyolefin composition

Thermoweldable fibers obtained from polyolefin composition

Polyolefin fibers, suitable for the preparation of nonwoven fabrics, prepared by using a spinneret or extruder with dies having a real or equivalent output diameter of the capillaries or holes greater than 0.4 mm, with the proviso that for fibers having a denier greater than or equal to 4 dtex, the ratio of the output capillary or hole diameter to the denier is greater than or equal to 0.06 mm/dtex.

Spinning process for the preparation of high thermobondability

Disclosed is a drawn, polyolefin fiber useful for nonwoven fabrics, the thermobonding index of said fiber being 4.5-9 Newtons, and the flexibility index thereof being 1020-1500. The fiber is composed of a blend of specified polymers. Also disclosed is a process for making the fiber by spinning the blend from a die hole having at the output end a diameter less than 0.5 mm, and drawing the resulting fiber at a draw ratio of 1.1 to 1.8.

Fibers suitable for the production of nonwoven fabrics having improved

Saxony carpet containing a pile yarn comprising propylene polymer yarn of increased resiliency and shrinkage, compared to crystalline propylene homopolymer yarn, having a continuous strand of multiple monofilament fibers, said fibers consisting essentially of certain propylene polymer blends and materials.

Resilient high shrinkage propylene polymer yarn and articles made

Fabric prepared from a propylene polymer yarn of increased resiliency and shrinkage, compared to crystalline propylene homopolymer yarn, comprising a strand of multiple monofilament fibers, the fibers consisting essentially of certain propylene polymer blends and materials.

Resilient, high shrinkage propylene polymer yarn and articles made

An olefin polymer composition is disclosed which comprises (by weight):

Compositions for polyolefin fibers having improved flame-resistance and

Disclosed is a simple, undrawn, 1-10 dtex, propylene polymer fiber, the thermowelding stength of which is at least 5 Newtons, the flexibility index of which is greater than 800, and which has good resistance to yellowing and aging. Also disclosed are a nonwoven fabric of said fiber, and a process of making the fiber.

An olefin polymer composition is disclosed which contains (by weight):

Disclosed is a polyolefin yarn capable of increased resiliency and shrinkage comprising continuous strands of multiple monofilament fibers or staple fibers of propylene polymer material, optionally blended with polypropylene homopolymer, said propylene polymer material selected from the group consisting of terpolymers of propylene with ethylene and C.sub.4 -C.sub.8 alpha-olefin; compositions of copolymers of propylene with C.sub.4 -C.sub.8 alpha-olefin together with copolymers of propylene and ethylene or terpolymers of propylene-ethylene-C.sub.4 -C.sub.8 alpha-olefin; compositions of terpolymers of propylene, ethylene and C.sub.4 -C.sub.8 alpha-olefin in combination with copolymers of propylene and C.sub.4 -C.sub.8 alpha-olefin and copolymers of ethylene and C.sub.4 -C.sub.8 alpha-olefin; random crystalline propylene copolymers with ethylene or a C.sub.4 -C.sub.8 alpha-olefin; and a heterophasic polyolefin composition; and fabric, especially pile fabric, such as carpeting, produced therefrom.

Resilient, high strinkage propylene polymer yarn and articles made

Olefinic polymers characterized by the presence of free carboxylic groups arranged along the polymeric chain, obtained by radicalic grafting of unsaturated carboxylic acids onto the chain of the olefinic polymer. The products so obtained exhibit in particular a high adhesion to metals. The manufacturing process is based on the use of at least two different organic peroxides, having different reactivities.

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Terni, Italy

Leonardo Spagnoli